Opalite
Synthetic Glass (Simulated Opal)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Learn about Mineral (Synthetic Paper And Ink Polymorph) in the encyclopedia
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Chalk
Calcium Carbonate (CaCO3)
sedimentary
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Amber
Organic gemstone (Succinite is common if from the Baltic)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Carborundum (Silicon Carbide)
Silicon carbide (SiC)
mineral
Barite
Barium sulfate (BaSO4)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial dyes
mineral
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Clear quartz crystal sphere
Quartz (silicon dioxide, SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Selenite (Gypsum)
Hydrous calcium sulfate (CaSO4·2H2O)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate - CaCO3)
mineral
Sandstone (Weathered Coastal Boulder)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide (Limonite/Hematite) coating
sedimentary
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Synthetic Mineral / Glass
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
gemstone
Plastic Building Toy (Lego-style piece)
Acrylonitrile Butadiene Styrene (ABS)
not a rock/mineral
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Synthetic (not a rock or mineral)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Pyrite
Iron sulfide (FeS2)
mineral
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Blue opalite (often sold as synthetic opal)
Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)
gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Cubic Zirconia (as a jewelry specimen)
Zirconium dioxide (ZrO2)
mineral
Polished brown stone, likely smoky quartz or jasper
Tentatively quartz (SiO₂), possibly smoky quartz; exact identification requires testing
mineral
Amber
Succinite (specifically for Baltic amber); C10H16O (Variable organic compound)
mineral
Quartz with Mica (Schist/Pegmatite fragment)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
igneous/metamorphic